[e2e] Looking for measurements on UDP blocking and rate limiting

Partha Kanuparthy partha at cc.gatech.edu
Mon Mar 21 21:57:43 PDT 2011

Hi Michael,

This is in response to your question on UDP rate limiting. We have been 
working on a tool called ShaperProbe to detect traffic shaping 
signatures on UDP traffic, and to estimate the corresponding token 
bucket parameters. We host it as a service on M-Lab; please feel free to 
test it:

We have collected shaping data from several ISPs over the last couple of 
months. A tech report describing a few ISP observations is online:


michawe wrote:
> Hi,
> I just spent quite a long time searching, including digging through the last couple of years of IMC, PAM and SIGMETRICS - but to my surprise, I was unable to find any measurement study on UDP blocking or UDP-specific (as opposed to TCP-) rate limiting in the Internet. There must be some studies out there?!
> Any hints would be greatly appreciated; and very sorry for the noise in case I just overlooked a very obvious and well-known reference!
> Michael

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